观察点阵CO2激光术后联合重组贻贝粘蛋白水凝胶敷料疗效及安全性。方法 选取2022 年9月—2023年9月来我院皮肤科室治疗痤疮凹陷性瘢痕的患者60例,采用双盲数字法将其平均分为研究组30例和对照组30例,其中对照组患者使用点阵CO2激光治疗...观察点阵CO2激光术后联合重组贻贝粘蛋白水凝胶敷料疗效及安全性。方法 选取2022 年9月—2023年9月来我院皮肤科室治疗痤疮凹陷性瘢痕的患者60例,采用双盲数字法将其平均分为研究组30例和对照组30例,其中对照组患者使用点阵CO2激光治疗,研究组患者在采用点阵CO2激光的基础上联合重组贻贝粘蛋白水凝胶敷料治疗。治疗28d后对两组患者临床疗效、瘢痕皮损、面部红斑量、经表皮水分流失量、临床痤疮瘢痕情况(ECCA评分量表)、面部整体美学效果改善情况(GAIS评分量表)和治疗期间的安全性进行对比。结果 治疗28d后研究组患者的临床总治疗有效率明显高于对照组(93.33% vs 63.33%),差异有统计学意义(P<0.05);治疗后,研究组患者的急性炎症反应半定量评分明显低于对照组(1.53±0.37 vs 2.16±0.28),而平均脱痂时间明显短于对照组(6.34±1.36d vs 8.27±1.86d),差异有统计学意义(P<0.05);治疗后两组患者的ECCA权重评分较治疗前均显著降低,而两组患者的GAIS评分较治疗前显著升高,差异均具有统计学意义(P<0.05),其中研究组患者相较于对照组患者而言ECCA降低更多(15.78±5.28 vs 23.62±6.29),而GAIS升高更多(2.57±0.61 vs 2.13±0.56) ,差异具有统计学意义(P<0.05);两组不良反应发生率差异无统计学意义(P>0.05)。结论 重组贻贝粘蛋白水凝胶敷料联合点阵CO2激光治疗痤疮凹陷性瘢痕疗效确切,可减少点阵CO2激光术不良反应,缩短恢复期,提高皮肤屏障功能与美观度。展开更多
Objective:To explore the value of using the venous-arterial carbon dioxide partial pressure difference and the arterial-venous oxygen content difference ratio(ΔP_(CO2)/Ca-v_(O2))as targets to guide early tissue hypop...Objective:To explore the value of using the venous-arterial carbon dioxide partial pressure difference and the arterial-venous oxygen content difference ratio(ΔP_(CO2)/Ca-v_(O2))as targets to guide early tissue hypoperfusion in sepsis in plateau areas.Methods:90 sepsis patients admitted to the Third People’s Hospital of Xining and Golmud People’s Hospital from June 2017 to December 2022 were selected as the research subjects,and they were divided into the Scv_(O2)(central venous oxygen saturation)group and theΔP_(CO2)/Ca-v_(O2)group,with 45 cases in each group.The two groups were treated with early shock resuscitation according to different protocols.The hemodynamic characteristics of the two groups of patients before and after resuscitation were observed,and the volume responsiveness was evaluated.The ROC(receiver operating characteristic)curve was used to analyze the significance ofΔP_(CO2)/Ca-v_(O2),Scv_(O2),lactate,lactate clearance,and urine output in evaluating patient prognosis and the correlation betweenΔP_(CO2)/Ca-v_(O2)and the above indicators was explored.Results:Compared with before resuscitation,after fluid resuscitation,the heart rate(HR),mean arterial pressure(MAP),central venous pressure(CVP),cardiac index(CI),lactate,lactate clearance rate,and urine output of the two groups of patients were significantly improved(P<0.05);in terms of therapeutic effect,the 28-day mortality rate,6-hour fluid balance,and lactic acid clearance of theΔP_(CO2)/Ca-v_(O2)group were better than the Scv_(O2)group.The ROC characteristic curve showed that theΔP_(CO2)/Ca-v_(O2)value can effectively predict the prognosis of patients(AUC=0.907,sensitivity was 97%,specificity was 72.4%,and critical value was 1.84).ΔP_(CO2)/Ca-v_(O2)significantly correlated with Scv_(O2),lactic acid,and lactic acid clearance rate.Conclusion:TheΔP_(CO2)/Ca-v_(O2)value can be used to guide fluid resuscitation in early hypoperfusion in sepsis in plateau areas,improve patients’hemodynamics,reduce lactate indicators,and increase urine output.ΔP_(CO2)/Ca-v_(O2)level>1.84 can effectively improve patient prognosis.展开更多
This study deal with interactions between thermal and radiative energy flow in experimental situations of varying complexity. Of special interest is how IR energy, re-emitted from CO<sub>2</sub> gas, behav...This study deal with interactions between thermal and radiative energy flow in experimental situations of varying complexity. Of special interest is how IR energy, re-emitted from CO<sub>2</sub> gas, behaves in an earth/atmosphere simulated setup. Such an experiment was performed by Hermann Harde and Michael Schnell where they show that IR radiation emitted from CO<sub>2</sub> can warm a small black-body metal plate. In a control experiment, we verified this result. However, in their experiment, the amount of IR radiation from the heating element was strongly attenuated. In a modified experiment, where IR emission from the heating source is present, no heating but a slight cooling of a black object is found when air is replaced by CO<sub>2</sub>. The modified experimental situation is also more like the earth/atmosphere situation. The presence of IR radiation from a heated surface (like when the sun heats the earth’s surface) strongly attenuates the heating ability of increasing backscatter from increased amount of CO<sub>2</sub> in the atmosphere. This result has consequences for the climate change models used by IPCC.展开更多
文摘观察点阵CO2激光术后联合重组贻贝粘蛋白水凝胶敷料疗效及安全性。方法 选取2022 年9月—2023年9月来我院皮肤科室治疗痤疮凹陷性瘢痕的患者60例,采用双盲数字法将其平均分为研究组30例和对照组30例,其中对照组患者使用点阵CO2激光治疗,研究组患者在采用点阵CO2激光的基础上联合重组贻贝粘蛋白水凝胶敷料治疗。治疗28d后对两组患者临床疗效、瘢痕皮损、面部红斑量、经表皮水分流失量、临床痤疮瘢痕情况(ECCA评分量表)、面部整体美学效果改善情况(GAIS评分量表)和治疗期间的安全性进行对比。结果 治疗28d后研究组患者的临床总治疗有效率明显高于对照组(93.33% vs 63.33%),差异有统计学意义(P<0.05);治疗后,研究组患者的急性炎症反应半定量评分明显低于对照组(1.53±0.37 vs 2.16±0.28),而平均脱痂时间明显短于对照组(6.34±1.36d vs 8.27±1.86d),差异有统计学意义(P<0.05);治疗后两组患者的ECCA权重评分较治疗前均显著降低,而两组患者的GAIS评分较治疗前显著升高,差异均具有统计学意义(P<0.05),其中研究组患者相较于对照组患者而言ECCA降低更多(15.78±5.28 vs 23.62±6.29),而GAIS升高更多(2.57±0.61 vs 2.13±0.56) ,差异具有统计学意义(P<0.05);两组不良反应发生率差异无统计学意义(P>0.05)。结论 重组贻贝粘蛋白水凝胶敷料联合点阵CO2激光治疗痤疮凹陷性瘢痕疗效确切,可减少点阵CO2激光术不良反应,缩短恢复期,提高皮肤屏障功能与美观度。
基金2017 Xining Citizens’Biotechnology Plan Project(Project number:2017-K-15)。
文摘Objective:To explore the value of using the venous-arterial carbon dioxide partial pressure difference and the arterial-venous oxygen content difference ratio(ΔP_(CO2)/Ca-v_(O2))as targets to guide early tissue hypoperfusion in sepsis in plateau areas.Methods:90 sepsis patients admitted to the Third People’s Hospital of Xining and Golmud People’s Hospital from June 2017 to December 2022 were selected as the research subjects,and they were divided into the Scv_(O2)(central venous oxygen saturation)group and theΔP_(CO2)/Ca-v_(O2)group,with 45 cases in each group.The two groups were treated with early shock resuscitation according to different protocols.The hemodynamic characteristics of the two groups of patients before and after resuscitation were observed,and the volume responsiveness was evaluated.The ROC(receiver operating characteristic)curve was used to analyze the significance ofΔP_(CO2)/Ca-v_(O2),Scv_(O2),lactate,lactate clearance,and urine output in evaluating patient prognosis and the correlation betweenΔP_(CO2)/Ca-v_(O2)and the above indicators was explored.Results:Compared with before resuscitation,after fluid resuscitation,the heart rate(HR),mean arterial pressure(MAP),central venous pressure(CVP),cardiac index(CI),lactate,lactate clearance rate,and urine output of the two groups of patients were significantly improved(P<0.05);in terms of therapeutic effect,the 28-day mortality rate,6-hour fluid balance,and lactic acid clearance of theΔP_(CO2)/Ca-v_(O2)group were better than the Scv_(O2)group.The ROC characteristic curve showed that theΔP_(CO2)/Ca-v_(O2)value can effectively predict the prognosis of patients(AUC=0.907,sensitivity was 97%,specificity was 72.4%,and critical value was 1.84).ΔP_(CO2)/Ca-v_(O2)significantly correlated with Scv_(O2),lactic acid,and lactic acid clearance rate.Conclusion:TheΔP_(CO2)/Ca-v_(O2)value can be used to guide fluid resuscitation in early hypoperfusion in sepsis in plateau areas,improve patients’hemodynamics,reduce lactate indicators,and increase urine output.ΔP_(CO2)/Ca-v_(O2)level>1.84 can effectively improve patient prognosis.
文摘This study deal with interactions between thermal and radiative energy flow in experimental situations of varying complexity. Of special interest is how IR energy, re-emitted from CO<sub>2</sub> gas, behaves in an earth/atmosphere simulated setup. Such an experiment was performed by Hermann Harde and Michael Schnell where they show that IR radiation emitted from CO<sub>2</sub> can warm a small black-body metal plate. In a control experiment, we verified this result. However, in their experiment, the amount of IR radiation from the heating element was strongly attenuated. In a modified experiment, where IR emission from the heating source is present, no heating but a slight cooling of a black object is found when air is replaced by CO<sub>2</sub>. The modified experimental situation is also more like the earth/atmosphere situation. The presence of IR radiation from a heated surface (like when the sun heats the earth’s surface) strongly attenuates the heating ability of increasing backscatter from increased amount of CO<sub>2</sub> in the atmosphere. This result has consequences for the climate change models used by IPCC.
